Pulley block



Feb. 16 ,1926. 1,573,352

F. B. MALLoRY PULLEY BLOCK Filed June 13, 1923 2 Sheets-Sheet 1 ative Patented Feb. 16, 1926.

uNiTED STATES FREDERICK IB. IVILLORY, OF PORTLAND, OREGON.

PULLEY BLOCK.

Application filed .Tune 13, 1923.

To all whom it may concer/n Be it known that l, Fnnnnnroii B. MAL- LoRY, a citizen ot the United States of America, and resident of Portland, in the county of Multnomah, in the State or' Oregon, have invented certain new and usetul Improvements in Pulley Blocks, of which the following isa specification, reference being had to the accompanying drawings.

My invention relates to devices such as pulley blocks and has for its main object the production otl a block in which the sheave, running preferably on an aXis fixed in the block-sides, is provided with means of lubrication adapted to functionate in any operposition which the block may assume in use.

Besidethe main object my invention comprehends certain structural details which possess in themselves distinct utility and, obviously, ar-e vnot limited in their application to pulley blocks. That constitutes my .invention will be hereinafter specified in de tail and succinctly set forth in the appended claims.

In the accompanying drawings,

Figure I is a medial vertical section partly in elevation of one of my blocks, with exception of the head for suspending it.

Figure Il is a side elevation of the subject matter of Figure I, .the same being partly in section indicated by line II-II in Figure I, andthe sheave being partly broken away.

. Figure IH is a tragmental view showing a section on the line IIIe-H1 of Figure 1.

Figure IV is a tragmental view showing in side elevation the means ot connection between the axle and on-e block-side employed to prevent relative rotation betweenthose parts.V j

Referring Vto the numerals on the drawings, 1v indicates one block-side, and 2 the other. They are, when assembled, in preerredform ot embodiment shown, firmly united by an axle 3, in the present instance -shown as the stationary or non-rotating type and upon which rotates asheave tween the block-sides.

The block-.sides are provided, respectively with perforated ears 5, which represent any vsuitable members for vsecuring thereto any serial No. 645,110.

my invention illustrated the two block-sides are substantially identical in general outside contour, and are distinguished in details of interior construction mainly lor the reason that, by preference, only one or them carries means ot lubrication for the bearing surfaces between the bushing G of the sheave hub and the axle.

Accordingly, the block-side 1 is provided on its inner side with two webs 7 .and 8 which are disposed substantially at right an'- gles thereto and parallel to each other, and which are united at their upper ends by a cross-web 9. At their lower ends they merge into two inturned webs 10 and 11 extending towards each other from opposite ends oli' a segmental web 12. The webs 7, 8, 9, 10, 11, and 12 are closed preferably by being severally united to an all-embracing cover-wall 14, to which and to the outside shell of the block-side the said webs serve, in effect, as truss supports.

Substantially at thc lower extremities of the webs 7 and S, I provide oppositely extending abutment webs 15 and 16 for a delinite purpose to be presently described.

The wall 14 is preferably provided with a thickened annular boss 17, it being provided with an internally threaded aperture 18 for the reception of an externally threaded reduced terminal 19 of the axle 3. The terminal 19 projects through and is threaded into an aperture 2O in the outer wall of the blockside that is coaxial with the aperture 1S in the boss 17. The joint between the terminal 19 and the aperture 2O should be securely oil-tight, and is therefore preferably surrounded by a packing ring n3, which may be held in place by a groove in the base oit lock-nut 24 which screws on the end ot the terminal 19.

The opposite edges of the webs 15 and 1G are for the purpose to be explained as aforesaid threaded to fit the threads ot the terminal 19, with the effect, through their connection therewith, ot dividing thc space enclosed on one side by the cover-wall la into two entirely separated lubricant chambers which are designated for convenience of retl` crence by the numerals Q5 and 2G, respectively.

The purpose ot the said lubricant cham bers is to a'lord independent means of lubrication to the bearings between the sheavc and its axle. To that end l prcter to provide e to the sheave bearing.

two separate elongated chambers or bores 27 and 28v longitudinally disposed Within the axle 3 and' substantially parallel to its axis. Thebore 27 communicates with the lubricant chamber as through a radial port 29, and the bore 28 communicates With the lubricant chamber 26 as through a similar port 30. lt will be noted that the axle is disposed at the ends of the chambers, so that irrespective of the amount of lubricant inv each chambers there Will always be a flow By disposing the Webs 15 and 16 in different planes, as shown in Figure Il, the axle being lixed irrevolubly in the assembled'block, provision is made Jfor constant independent communication be-r tween the bores 27 and 28 and their respective lubricant chambers. At the end of each i of the-ports `29 and 30 is provided, through .curvatures 231` and32 of the respective Webs -Tand 8, abay, designedand adapted to iaopen ends of'therespective bores 2T- and 28` are securely closedagamst oil leakage Yas by screw plugs` 37'. 3S`and 39 indica-te screw plugged filler` vents for the lubricant chambers, respectively.

' 'Ihe-bloclr-side 2 is in loutwardappearance substantially identical With the block-sidev 1'to which in-internalconstruction it conforms to some extent. lf desired, the block side 2 may be -a duplicate of the side 1 both in form and function. It is, however, preterabl-yA provided with Webs, 40 of which one isshown in -Figure l, Which are substantially like the Webs 7 and 8 but Without the cover- Wall 14 ofthe latter or other covering. rlhe Webs 40 serve as trusssupports to the shell of the block-side as Well asL to a recessedV axle support 41, which is provided thereinfor the guard ofv a nut 42 threaded to the reduced terminal 43. 44 indicates a baseV Washer which is-prerterably provided for the nut 42 andwhich spansan aperture 45 provided-in the end ot' the support 41 for reception of the terminal 43. rlhe part 43 is provided aty its base with an annularA shoulder 46 which tits Withinl an apertureprovided for it in the end ot the support 41, andl which, being provided with flatted sides 47 (see vFigure lV), presents an example of means tor` holding the axle 3 in place in the block against rotation, thereby fixing a detinite relationship between the ports 29- and SO and the abutment Webs 15 and 1G.

The operation ot my device requires, in view or' the preceding specification, only the following brie't' description.

The parts beingi` assembled as shown in Figure l, with addition or' means for suspension or attachment ot' the block indicated by the presence ot' the ears 5, and the lubricant chambers 25 and 26 being charged with a supply of itiuid lubricant, the block is ready for use. The block may assume an indeii` nite number ot positions in operation, particularly when employed for logging purposes for which it is especially designed and adapted. By provision ot the lubricant chambers 25 and-26, substantially as they are described and illustrated, each being` independent ot the other, etl'ective means of lubrication of the bearings of the block in any operative position are provided. Woreove-r, the entire separation of the lubricant chambers one from another insures against the result or draining the lubricant from one chamber into another, Which would be ottenfliable to occur if there were communication between them.

lVhat I claim is:

1. A pulley block coi-nprising` the combination vwith a pair or block-sides, an axle sup ported thereby, and a sheave thereon, orf

Wholly independent lubricating chambers in one ot vthe block-sides, and separate means of confimunicating lubricant supply through the axle to the bearing surfaces ot the sheave and axle, from one or the other ot said lubricant chambers, depending vupon the position occupied by the block inuse.

2. A pulley block comprising the combinationwith a pair of block-sides, a fixed axle, anda sheave revoluble upon the axle, of independent lubricant chambersl in one of the block-sides, a pair or separate longitudinal bores in the axle in operative commu-nication With the bearing surfaces ot' the sheave and axle, and ports establishing operative conin'iunication between the said chambers and bores respectively.

3. A pulley block con'iprising the combina'- tion with a pair o't' block-sides, a ixedaxle, and a sheave revoluble upon the axle, o'f'independent lubricant chambersinone of the block-sides, a pair of separate longitudinal' bores in the axle in operative communication With the bearing sur'laces or the sheave and axle, and ports establishing operative communication between the said chambersand bores respectively` said lubricant chambers being provided With bays detined adjacentto the inlet ends of said ports substantially for the purpose specified.

4.Y A. block-side provided with a pair of lubricant chambers` defined in part by the Wall of the shell oit the bloclesideanda cover-Wall for the chambers, the said Walls being provided With coaxial threaded Vapertures and the said chambers being partly divided by oppositely extending threaded abutment webs, said threaded apertures and webs being adapted to receive a threaded axle terminal with the etiect thereby of completely separating` the lubricant chambers one from the other.

ln a device of the class described, a si-de plate having two independent lubricant chambers communicating respectively with an axle' receiving space therebetween, said side plate having coaxial apertures between which said axle receiving space is located adapted to receive and support the extremity of an axle, and an axle insert-ed in said apertures and said space serving to receive lubricant from said chambers. n

G. Asanarticle of manufacture, an axle having means tor transmitting lubricant longitudinally thereof and provided with a plurality of outlet ducts in connection with said i means, said axle being Yformed with a plurality of inlet' orifices leading to said means and disposed upon substantially opposite sides ot the axle, said criticos being cut oil 'from communication with each other.

7. A. pulley block comprising side plates, a sheave having an axle extending into said plates, at least two separated lubricant side reservoirs independentot the sheave and disposed on substantially opposite sides et the longitudinal axis et said axle, means tor independently filling said reservoirs and means communicating with each reservoir for trans mitting lubricant from said reservoirs to the sheave bearing.

8. A pulley block comprising side plates,

a sheave having an axle extending into said plates, at least two separated and inde-pend cnt lubricant reservoirs disposed on substantially opposite sides oi said axle in one of said plates, means lor independently filling said Areservoirs and means communicating withV each reservoir for transmitting lubricant trom said reservoirs to the sheave bearing.

9. A pulley block comprising side plates, a sheave having an axle extending into said plates, at least two separated lubricant side f reservoirs independent et the sheave and disposed on substantially opposite sides ofl the longitudinal axis of said axle, means communicating with each reservoir for transvmitting lubricant from said reservoirs to the said reservoirs to the sheave bearing, said said means being located an end of each reservoir, independently iillmg said means being located substantially at an end of each reservoir, and means for independently lilling said reservoirs.

l1. ln a device of the class described, a support lor an axle having two independent lubricant reservoirs, means 'tor independently filling said reservoirs, each et' the reservoirs having positioned in a plane between hem a space adapted to receive an axle, and an axle litted into said space, said reservoirs each cominunicating with the axle and being arranged on substantiallyr opposite sidesI ot' the longitudinal axis thcreo'l.

l2. ln a device ot the class described, a support lor an axle having two independent lubricant reservoirs adapted to receive an axle therebetween, means 'for independently lilling said reservoirs, the reservoirs having between them an axle, said reservoirs each communicating with the axle and being arranged on substantially opposite sides ol the longitudinal axis thereoi.

ln. a device ol the class described, a .support lor an axle having two independent lubricant reservoirs adapted to receive an axle therebetween, means 'for independently lilling said reservoirs, the reservoirs having between them an axle, the axle serving to close oil.' said reservoirs one it'rom the other, and said reservoirs each connnunicating with the axle and being` arranged on substantially opposite sides thereof.

let. ln a device ot the class described, side plates at least one el. which is provided with two independent lubricant reservoirs, a sheave axle fitted into said plate between said reservoirs, each of said reservoirs ccmmnnicating with the axle, means for independently lilling the reservoirs, said reservoirs being positioned on opposite sid-es ot the longitudinal axis ot said axle, means in said axle i'or transmitting lubricant longitudinally thereotI from the reservoirs, and inlet ports arranged on substantially opposite sides of the axle and comnniuicating with said reservoirs.

l5. ln a device el the class described, an axle having means for t 'ansmitting lubricant longitudinally thereoi", and provided with a plurality of outlet ducts in connection with said means, said axle being termed at one end with a pair ot inlet orilices leading to said means and disposed upon substantially opposite sides oi the axle, the orifices being cut oft from communication with each other.

1G. In a device ot the class described, an axle having means fort ansinitting lubricant longitudinally thereof, said axle being provided with outlet ducts for said lubricant disposed intermediate the ends of said axle and a pair ot inlet orilices communicating with said means disposed respectively upon substantially opposite sides oi" the loogitudi nal axis oi the axle, and a support for said axle having separated lubricant reservoirs each in communication withl one of said orilices.

17. In a device of the class described, an

axle having` means for transmitting lubricant `longitudinally thereof, said axle being provided with outlet ducts for said lubricant disposed intermediate the ends of the axle and a pair of inlet orifices connnumcating with said means disposed respectively upon 18. Asan' article of manufacture, an axle 15 having means for transmitting lubricant longitudinally thereof and provid-ed with a plurality of outlet ducts in communication with said means, said axle being formed with a plurality of inlet orifices leading to said means and circumferentially disposed upon substantially opposite sides of the axle, said orifices beingcut ot from communication with each other. Y

ln testimony whereof, I" have hereunto set my hand.

FREDERICK B. MALLRY. 

